| rwlock.h (178147) | rwlock.h (179025) |
|---|---|
| 1/*- 2 * Copyright (c) 2006 John Baldwin <jhb@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 12 unchanged lines hidden (view full) --- 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * | 1/*- 2 * Copyright (c) 2006 John Baldwin <jhb@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 12 unchanged lines hidden (view full) --- 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * |
| 29 * $FreeBSD: head/sys/sys/rwlock.h 178147 2008-04-12 12:17:49Z kris $ | 29 * $FreeBSD: head/sys/sys/rwlock.h 179025 2008-05-15 20:10:06Z attilio $ |
| 30 */ 31 32#ifndef _SYS_RWLOCK_H_ 33#define _SYS_RWLOCK_H_ 34 35#include <sys/_lock.h> 36#include <sys/_rwlock.h> 37#include <sys/lock_profile.h> --- 40 unchanged lines hidden (view full) --- 78#define RW_READERS_LOCK(x) ((x) << RW_READERS_SHIFT | RW_LOCK_READ) 79#define RW_ONE_READER (1 << RW_READERS_SHIFT) 80 81#define RW_UNLOCKED RW_READERS_LOCK(0) 82#define RW_DESTROYED (RW_LOCK_READ_WAITERS | RW_LOCK_WRITE_WAITERS) 83 84#ifdef _KERNEL 85 | 30 */ 31 32#ifndef _SYS_RWLOCK_H_ 33#define _SYS_RWLOCK_H_ 34 35#include <sys/_lock.h> 36#include <sys/_rwlock.h> 37#include <sys/lock_profile.h> --- 40 unchanged lines hidden (view full) --- 78#define RW_READERS_LOCK(x) ((x) << RW_READERS_SHIFT | RW_LOCK_READ) 79#define RW_ONE_READER (1 << RW_READERS_SHIFT) 80 81#define RW_UNLOCKED RW_READERS_LOCK(0) 82#define RW_DESTROYED (RW_LOCK_READ_WAITERS | RW_LOCK_WRITE_WAITERS) 83 84#ifdef _KERNEL 85 |
| 86#define rw_recurse lock_object.lo_data 87 |
|
| 86/* Very simple operations on rw_lock. */ 87 88/* Try to obtain a write lock once. */ 89#define _rw_write_lock(rw, tid) \ 90 atomic_cmpset_acq_ptr(&(rw)->rw_lock, RW_UNLOCKED, (tid)) 91 92/* Release a write lock quickly if there are no waiters. */ 93#define _rw_write_unlock(rw, tid) \ --- 137 unchanged lines hidden --- | 88/* Very simple operations on rw_lock. */ 89 90/* Try to obtain a write lock once. */ 91#define _rw_write_lock(rw, tid) \ 92 atomic_cmpset_acq_ptr(&(rw)->rw_lock, RW_UNLOCKED, (tid)) 93 94/* Release a write lock quickly if there are no waiters. */ 95#define _rw_write_unlock(rw, tid) \ --- 137 unchanged lines hidden --- |